The mom-to-be stunned in sapphire on Thursday night at the 'Her' premiere.

LOS ANGELES — Talk about a stylish mom-to-be. Her star Olivia Wilde capped off a long day on Thursday in a stunning, baby bump-hugging David Koma dress and sky-high Jimmy Choos.

"I'm popping out of this thing!" she told reporters on the red carpet. Wilde looked amazingly awake for someone who rose at the crack of dawn to announce the Golden Globe nominations at 5:30 a.m. in Los Angeles. How did she manage it?

"I don't know," she admitted to USA TODAY, noting her 3 a.m. wake-up call. "I flew in (Wednesday) night. Landed around 10 p.m. Got up at 3 a.m. Read those names in a stupor. Went back to sleep in for like two hours."

And then killed it at the premiere of Spike Jonze's critically adored new love story. "This is what we call a dress," she said, laughing.

At the Los Angeles premiere of their new film 'Her,' Olivia Wilde and Rooney Mara discuss their reaction at discovering the comedy got two Golden Globes nominations, while Amy Adams talks about her 'American Hustle' nod. (Dec. 13)
AP